EP2252774B1 - Dispositif électromagnétique de réglage d'un arbre à cames - Google Patents

Dispositif électromagnétique de réglage d'un arbre à cames Download PDF

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Publication number
EP2252774B1
EP2252774B1 EP10716280A EP10716280A EP2252774B1 EP 2252774 B1 EP2252774 B1 EP 2252774B1 EP 10716280 A EP10716280 A EP 10716280A EP 10716280 A EP10716280 A EP 10716280A EP 2252774 B1 EP2252774 B1 EP 2252774B1
Authority
EP
European Patent Office
Prior art keywords
unit
yoke
core
armature
axial
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP10716280A
Other languages
German (de)
English (en)
Other versions
EP2252774A1 (fr
Inventor
Stefan Bender
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ETO Magnetic GmbH
Original Assignee
ETO Magnetic GmbH
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Filing date
Publication date
Application filed by ETO Magnetic GmbH filed Critical ETO Magnetic GmbH
Publication of EP2252774A1 publication Critical patent/EP2252774A1/fr
Application granted granted Critical
Publication of EP2252774B1 publication Critical patent/EP2252774B1/fr
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/16—Rectilinearly-movable armatures
    • H01F7/1607—Armatures entering the winding
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/081—Magnetic constructions
    • H01F2007/085—Yoke or polar piece between coil bobbin and armature having a gap, e.g. filled with nonmagnetic material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/16—Rectilinearly-movable armatures
    • H01F7/1607—Armatures entering the winding
    • H01F2007/163—Armatures entering the winding with axial bearing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/126—Supporting or mounting

Definitions

  • the present invention relates to an electromagnetic camshaft adjusting device according to the preamble of the main claim.
  • Such a device is known from DE 20 2008 013 654 the applicant and describes a device provided on an end face of a camshaft of an internal combustion engine, which is in axial position to this engine camshaft and in response to energization of the stationary coil unit and thereby caused by moving the armature unit axial movement of the camshaft adjustment (more precisely: a valve spool ) causes.
  • FIG. 3 illustrates: An anchor unit formed from an axial armature tappet 10 and a cup-shaped anchor portion 12 is guided in the axial direction movable to a stationary coil unit 14 (winding on bobbin);
  • a yoke-core unit consisting of a yoke portion 16 and a core portion 18 integrally thereon is formed, wherein the unit 16, 18 is integral with a double-conical tapered transition portion 20 is formed;
  • the purpose of this transition section is on the one hand, both units 16, 18 integrally and thus centered form, on the other hand (by the reduced thickness) to effect a rapid saturation of the magnetic flux, therefore, so that both elements 16, 18 magnetically largely separate from each other.
  • the yoke-core unit 16, 18, the coil unit 14 and the surrounding housing 36 are provided stationary on the engine block; the armature unit 10 is displaceably mounted only in the axial direction, wherein the ball 24 receives a rotational movement of the camshaft unit.
  • Object of the present invention is therefore to reduce an electromagnetic camshaft adjusting device according to the preamble of the main claim in terms of their axial length, while reducing the design and assembly costs.
  • the yoke and core unit (also yoke-core unit) is rotatable relative to the coil unit (i.e., rotatable about the axial direction), with the armature unit guided therein with the slider unit firmly attached to it.
  • valve slide unit (slide unit) directly into or on the armature unit, insofar establish a firm connection between the armature unit and actuator camshaft adjustment.
  • the approximately in the form of the combination of cap (reference numeral 34 in Fig. 3 ) and ball (24) formed storage is unnecessary.
  • the yoke and core unit is integrally reinforced, further advantageous and further education by a politicianssutragendes (aufzusch spaendes) non-magnetic material in the transition region and then additionally used this transition region material to the unit in the form of an axial bearing against another (
  • First support housing section is a highly resilient, very easy to produce and minimized manufacturing and assembly costs device created.
  • the radial bearing between the yoke and core unit on the one hand and the stationary housing wall on the other hand in the form of a sliding bearing which (to prevent a magnetic closure) suitable with a non-magnetic material, e.g. coated by means of build-up welding, so that the effort can be minimized here as well.
  • this radial bearing by a bushing or the like additional mechanical element, which is suitably and advantageously also realized from non-magnetic material implemented.
  • the slide unit (valve slide) is firmly seated on the anchor unit (for example by a suitable interference fit) made of non-magnetic material and therefore does not affect the operation of the actual electromagnetic actuator section in the interaction between the armature and yoke core.
  • the anchor unit for example by a suitable interference fit
  • a way has been created with the present invention with significant reduction of the component cost, simultaneously with the possibility of minimizing the axial extent (in particular from the front side of the camshaft arrangement), the problem of compact installation space with the greatest possible reliability, ease of manufacture and assembly to combine.
  • FIG. 1 an annular housing 42 encircling an outer annular flange 40 which forms an inner hollow cylindrical housing wall 44 which extends a predetermined portion along the axial direction x.
  • a coil 48 is provided in otherwise known manner on a coil carrier unit 46, which can be energized in an otherwise known manner for moving the armature unit 50 in the axial direction.
  • the armature unit configured cup-shaped in the described embodiment with a diameter-tapered engagement portion 52, in an otherwise known manner, for example with the interposition of an armature guide tube (not shown) or a magnetically non-conductive coating (not shown) axially guided in a yoke and core unit, which consists of an upper yoke unit 54 and a lower core unit 56.
  • Both units 54, 56 are, cf. FIG. 3 , tapered in a double cone-shaped manner in the direction of an axial transition portion, wherein in the illustrated embodiment, a mechanical reinforcement in the form of a weld of non-magnetic material 58 (more precisely: CuZn) is provided.
  • the core unit 56 merges integrally into a valve housing section 64, which in this respect is the unit 30 in FIG. 3 and can rotate (via the applied non-magnetic material 58 at the transition region) by its fixed connection to the yoke unit 54.
  • the armature movement in the axial direction (x) then causes in an otherwise known manner an axial relative displacement between the units 62 and 56/64.
  • FIG. 1 realized device has significant structural advantages: Not only is, see. the juxtaposition between FIG. 3 and FIG. 1 , The axial extent from the end of the camshaft unit through the integration with the armature unit drastically reduced, also reduces the number of components required, which is particularly advantageous for the cost-sensitive mass production.
  • FIG. 2 illustrates (with otherwise the same reference numerals and corresponding to the same functional components) a variant of the embodiment according to FIG. 1 ,
  • this functionality is replaced by a bearing bush 70, which in this transition region between wall portion 44 of the housing and yoke 54th of the yoke and core sections to enable the radial bearing functionality.
  • a bearing bush 70 which in this transition region between wall portion 44 of the housing and yoke 54th of the yoke and core sections to enable the radial bearing functionality.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Valve Device For Special Equipments (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)

Claims (10)

  1. Dispositif électromagnétique de positionnement d'arbre à cames comprenant une unité à induit (50, 52) qui peut être déplacée par rapport à une unité à culasse et à noyau (54, 56) en alimentant électriquement une unité à bobine fixe (46, 48), ladite unité à induit (50, 52) étant configurée pour exécuter un mouvement de positionnement axial dirigé dans le sens longitudinal et pour exercer une force de positionnement correspondante dirigée le long d'une direction axiale (X) d'un arbre à cames de moteur à combustion interne sur l'arbre à cames de moteur à combustion interne en rotation au moyen d'une unité à coulisseau (62) qui interagit avec l'unité à induit, caractérisé en ce que
    l'unité à culasse et à noyau est montée de manière à pouvoir tourner par rapport à l'unité à bobine et offre un accueil pour l'unité à induit (50, 52), sur laquelle est montée à demeure l'unité à coulisseau (62), guidée par mobilité dans l'unité à culasse et à noyau le long de la direction axiale (X).
  2. Dispositif selon la revendication 1, caractérisé en ce que l'unité à culasse et à noyau est réalisée avec symétrie rotationnelle à partir d'une section à culasse et d'une section à noyau (54, 56) reliées à demeure l'une à l'autre par le biais d'une section de transition (58), la conductivité au flux magnétique de la zone de transition étant réduite par rapport à celle de la section à culasse et à noyau.
  3. Dispositif selon la revendication 2, caractérisé en ce que la section de transition (58) est réalisée dans un matériau de liaison magnétiquement non conducteur.
  4. Dispositif selon la revendication 2 ou 3, caractérisé en ce que la section de transition (58) est réalisée par application, notamment par brasage ou soudage, sur la section à culasse et à noyau.
  5. Dispositif selon l'une des revendications 2 à 4, caractérisé en ce que la section de transition (58) forme un palier axial, notamment un palier lisse axial, contre une première section de boîtier fixe (60) voisine de l'unité à bobine.
  6. Dispositif selon l'une des revendications 1 à 5, caractérisé en ce que l'unité à culasse et à noyau (54, 56) est supportée au moyen d'un palier lisse radial réalisant une séparation magnétique par rapport à une deuxième section de boîtier fixe (44) voisine de l'unité à bobine, qui s'étend de préférence dans le sens axial.
  7. Dispositif selon la revendication 6, caractérisé en ce qu'entre l'unité à culasse et à noyau et la deuxième section de boîtier est prévu un coussinet (70) en un matériau non conducteur magnétiquement pour réaliser le palier lisse radial.
  8. Dispositif selon la revendication 6 ou 7, caractérisé en ce qu'entre l'unité à culasse et à noyau et la deuxième section de boîtier est prévue une couche de séparation en un matériau non conducteur magnétiquement, laquelle est réalisée par application, notamment par soudage appliqué sur une section de l'unité à culasse et à noyau.
  9. Dispositif selon l'une des revendications 1 à 8, caractérisé en ce que l'unité à coulisseau (62), qui s'étend dans le sens axial et qui est de forme cylindrique, est réalisée dans un matériau non magnétique.
  10. Dispositif selon l'une des revendications 1 à 9, caractérisé en ce que l'unité à coulisseau (62) est fixée dans le sens axial à l'unité à induit, notamment en reposant sur l'unité à induit (52) au moyen d'un ajustement serré ou d'un ajustement forcé.
EP10716280A 2009-04-03 2010-03-24 Dispositif électromagnétique de réglage d'un arbre à cames Active EP2252774B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202009004611U DE202009004611U1 (de) 2009-04-03 2009-04-03 Elektromagnetische Nockenwellen-Verstellvorrichtung
PCT/EP2010/001833 WO2010112162A1 (fr) 2009-04-03 2010-03-24 Dispositif électromagnétique de réglage d'un arbre à cames

Publications (2)

Publication Number Publication Date
EP2252774A1 EP2252774A1 (fr) 2010-11-24
EP2252774B1 true EP2252774B1 (fr) 2011-10-05

Family

ID=42313896

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10716280A Active EP2252774B1 (fr) 2009-04-03 2010-03-24 Dispositif électromagnétique de réglage d'un arbre à cames

Country Status (6)

Country Link
US (1) US8402934B2 (fr)
EP (1) EP2252774B1 (fr)
CN (1) CN102369341B (fr)
AT (1) ATE527437T1 (fr)
DE (1) DE202009004611U1 (fr)
WO (1) WO2010112162A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011001420A1 (de) * 2011-03-18 2012-09-20 Eto Magnetic Gmbh Nockenwellenbaugruppe sowie Verfahren zum Herstellen einer Nockenwellenbaugruppe
DE102014109124A1 (de) 2014-06-30 2015-12-31 Kendrion (Villingen) Gmbh Elektromagnetische Nockenwellenverstelleinrichtung

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016100517A (ja) * 2014-11-25 2016-05-30 アイシン精機株式会社 ソレノイド
CN109372605B (zh) * 2018-08-29 2023-09-26 江苏农林职业技术学院 一种中置式vvt系统
DE102018222614A1 (de) * 2018-12-20 2020-06-25 Robert Bosch Gmbh Elektromagnetische Betätigungseinrichtung

Family Cites Families (10)

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Publication number Priority date Publication date Assignee Title
DE1851277U (de) 1962-03-10 1962-05-10 Zahnradfabrik Friedrichshafen Schaltmagnet.
DE3518978A1 (de) 1985-05-25 1986-11-27 Robert Bosch Gmbh, 7000 Stuttgart Elektromagnetventil
JPH0547309U (ja) 1991-11-28 1993-06-22 株式会社ユニシアジェックス 内燃機関のバルブタイミング制御装置
DE4239986A1 (en) 1991-11-28 1993-06-03 Atsugi Unisia Corp Valve timing control system for IC engine
DE19842334C1 (de) * 1998-09-16 1999-12-16 Bosch Gmbh Robert Magnetventil, insbesondere für die Verwendung in einem Modul für eine elektrohydraulische Getriebesteuerung
JP4657500B2 (ja) * 2001-06-15 2011-03-23 日鍛バルブ株式会社 自動車用エンジンにおける位相可変装置の電磁ブレーキ冷却構造
JP2003133129A (ja) * 2001-10-24 2003-05-09 Aisin Seiki Co Ltd ソレノイド
JP2003269643A (ja) * 2002-03-19 2003-09-25 Nok Corp ソレノイドバルブ
US6571757B1 (en) * 2002-04-22 2003-06-03 Borgwarner Inc. Variable force solenoid with spool position feedback to control the position of a center mounted spool valve to control the phase angle of cam mounted phaser
DE202008013654U1 (de) 2008-10-17 2010-03-04 Eto Magnetic Gmbh Elektromagnetische Stellvorrichtung

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011001420A1 (de) * 2011-03-18 2012-09-20 Eto Magnetic Gmbh Nockenwellenbaugruppe sowie Verfahren zum Herstellen einer Nockenwellenbaugruppe
WO2012126756A1 (fr) 2011-03-18 2012-09-27 Eto Magnetic Gmbh Ensemble arbre à cames ainsi que procédé de fabrication d'un ensemble arbre à cames
US8931450B2 (en) 2011-03-18 2015-01-13 Eto Magnetic Gmbh Camshaft assembly and method for producing a camshaft assembly
DE102014109124A1 (de) 2014-06-30 2015-12-31 Kendrion (Villingen) Gmbh Elektromagnetische Nockenwellenverstelleinrichtung
DE102014109124B4 (de) * 2014-06-30 2016-05-19 Kendrion (Villingen) Gmbh Elektromagnetische Nockenwellenverstelleinrichtung
US10290410B2 (en) 2014-06-30 2019-05-14 Kendrion (Villingen) Gmbh Electromagnetic camshaft adjuster

Also Published As

Publication number Publication date
US8402934B2 (en) 2013-03-26
DE202009004611U1 (de) 2010-08-12
WO2010112162A1 (fr) 2010-10-07
CN102369341A (zh) 2012-03-07
EP2252774A1 (fr) 2010-11-24
US20120031362A1 (en) 2012-02-09
CN102369341B (zh) 2013-09-04
ATE527437T1 (de) 2011-10-15

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